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gdaltindex_lib.cpp
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/******************************************************************************
*
* Project: MapServer
* Purpose: Commandline App to build tile index for raster files.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2001, Frank Warmerdam, DM Solutions Group Inc
* Copyright (c) 2007-2023, Even Rouault <even dot rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_port.h"
#include "cpl_conv.h"
#include "cpl_minixml.h"
#include "cpl_string.h"
#include "gdal_utils.h"
#include "gdal_priv.h"
#include "gdal_utils_priv.h"
#include "ogr_api.h"
#include "ogrsf_frmts.h"
#include "ogr_spatialref.h"
#include "commonutils.h"
#include <ctype.h>
#include <algorithm>
#include <cmath>
#include <limits>
#include <set>
typedef enum
{
FORMAT_AUTO,
FORMAT_WKT,
FORMAT_EPSG,
FORMAT_PROJ
} SrcSRSFormat;
/************************************************************************/
/* GDALTileIndexRasterMetadata */
/************************************************************************/
struct GDALTileIndexRasterMetadata
{
OGRFieldType eType = OFTString;
std::string osFieldName{};
std::string osRasterItemName{};
};
/************************************************************************/
/* GDALTileIndexOptions */
/************************************************************************/
struct GDALTileIndexOptions
{
bool bOverwrite = false;
std::string osFormat{};
std::string osIndexLayerName{};
std::string osLocationField = "location";
CPLStringList aosLCO{};
std::string osTargetSRS{};
bool bWriteAbsolutePath = false;
bool bSkipDifferentProjection = false;
std::string osSrcSRSFieldName{};
SrcSRSFormat eSrcSRSFormat = FORMAT_AUTO;
double xres = std::numeric_limits<double>::quiet_NaN();
double yres = std::numeric_limits<double>::quiet_NaN();
double xmin = std::numeric_limits<double>::quiet_NaN();
double ymin = std::numeric_limits<double>::quiet_NaN();
double xmax = std::numeric_limits<double>::quiet_NaN();
double ymax = std::numeric_limits<double>::quiet_NaN();
std::string osBandCount{};
std::string osNodata{};
std::string osColorInterp{};
std::string osDataType{};
bool bMaskBand = false;
std::vector<std::string> aosMetadata{};
std::string osGTIFilename{};
bool bRecursive = false;
double dfMinPixelSize = std::numeric_limits<double>::quiet_NaN();
double dfMaxPixelSize = std::numeric_limits<double>::quiet_NaN();
std::vector<GDALTileIndexRasterMetadata> aoFetchMD{};
std::set<std::string> oSetFilenameFilters{};
};
/************************************************************************/
/* PatternMatch() */
/************************************************************************/
static bool PatternMatch(const char *input, const char *pattern)
{
while (*input != '\0')
{
if (*pattern == '\0')
return false;
else if (*pattern == '?')
{
pattern++;
if (static_cast<unsigned int>(*input) > 127)
{
// Continuation bytes of such characters are of the form
// 10xxxxxx (0x80), whereas single-byte are 0xxxxxxx
// and the start of a multi-byte is 11xxxxxx
do
{
input++;
} while (static_cast<unsigned int>(*input) > 127);
}
else
{
input++;
}
}
else if (*pattern == '*')
{
if (pattern[1] == '\0')
return true;
// Try eating varying amounts of the input till we get a positive.
for (int eat = 0; input[eat] != '\0'; eat++)
{
if (PatternMatch(input + eat, pattern + 1))
return true;
}
return false;
}
else
{
if (tolower(*pattern) != tolower(*input))
{
return false;
}
else
{
input++;
pattern++;
}
}
}
if (*pattern != '\0' && strcmp(pattern, "*") != 0)
return false;
else
return true;
}
/************************************************************************/
/* GDALTileIndexTileIterator */
/************************************************************************/
struct GDALTileIndexTileIterator
{
const GDALTileIndexOptions *psOptions = nullptr;
int nSrcCount = 0;
const char *const *papszSrcDSNames = nullptr;
std::string osCurDir{};
int iCurSrc = 0;
VSIDIR *psDir = nullptr;
GDALTileIndexTileIterator(const GDALTileIndexOptions *psOptionsIn,
int nSrcCountIn,
const char *const *papszSrcDSNamesIn)
: psOptions(psOptionsIn), nSrcCount(nSrcCountIn),
papszSrcDSNames(papszSrcDSNamesIn)
{
}
void reset()
{
if (psDir)
VSICloseDir(psDir);
psDir = nullptr;
iCurSrc = 0;
}
std::string next()
{
while (true)
{
if (!psDir)
{
if (iCurSrc == nSrcCount)
{
break;
}
VSIStatBufL sStatBuf;
const std::string osCurName = papszSrcDSNames[iCurSrc++];
if (VSIStatL(osCurName.c_str(), &sStatBuf) == 0 &&
VSI_ISDIR(sStatBuf.st_mode))
{
auto poSrcDS = std::unique_ptr<GDALDataset>(
GDALDataset::Open(osCurName.c_str(), GDAL_OF_RASTER,
nullptr, nullptr, nullptr));
if (poSrcDS)
return osCurName;
osCurDir = osCurName;
psDir = VSIOpenDir(
osCurDir.c_str(),
/*nDepth=*/psOptions->bRecursive ? -1 : 0, nullptr);
if (!psDir)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot open directory %s", osCurDir.c_str());
return std::string();
}
}
else
{
return osCurName;
}
}
auto psEntry = VSIGetNextDirEntry(psDir);
if (!psEntry)
{
VSICloseDir(psDir);
psDir = nullptr;
continue;
}
if (!psOptions->oSetFilenameFilters.empty())
{
bool bMatchFound = false;
const std::string osFilenameOnly =
CPLGetFilename(psEntry->pszName);
for (const auto &osFilter : psOptions->oSetFilenameFilters)
{
if (PatternMatch(osFilenameOnly.c_str(), osFilter.c_str()))
{
bMatchFound = true;
break;
}
}
if (!bMatchFound)
continue;
}
const std::string osFilename =
CPLFormFilename(osCurDir.c_str(), psEntry->pszName, nullptr);
if (VSI_ISDIR(psEntry->nMode))
{
auto poSrcDS = std::unique_ptr<GDALDataset>(
GDALDataset::Open(osFilename.c_str(), GDAL_OF_RASTER,
nullptr, nullptr, nullptr));
if (poSrcDS)
return osFilename;
continue;
}
return osFilename;
}
return std::string();
}
};
/************************************************************************/
/* GDALTileIndex() */
/************************************************************************/
/* clang-format off */
/**
* Build a tile index from a list of datasets.
*
* This is the equivalent of the
* <a href="/programs/gdaltindex.html">gdaltindex</a> utility.
*
* GDALTileIndexOptions* must be allocated and freed with
* GDALTileIndexOptionsNew() and GDALTileIndexOptionsFree() respectively.
*
* @param pszDest the destination dataset path.
* @param nSrcCount the number of input datasets.
* @param papszSrcDSNames the list of input dataset names
* @param psOptionsIn the options struct returned by GDALTileIndexOptionsNew() or
* NULL.
* @param pbUsageError pointer to a integer output variable to store if any
* usage error has occurred.
* @return the output dataset (new dataset that must be closed using
* GDALClose()) or NULL in case of error.
*
* @since GDAL3.9
*/
/* clang-format on */
GDALDatasetH GDALTileIndex(const char *pszDest, int nSrcCount,
const char *const *papszSrcDSNames,
const GDALTileIndexOptions *psOptionsIn,
int *pbUsageError)
{
if (nSrcCount == 0)
{
CPLError(CE_Failure, CPLE_AppDefined, "No input dataset specified.");
if (pbUsageError)
*pbUsageError = TRUE;
return nullptr;
}
auto psOptions = psOptionsIn
? std::make_unique<GDALTileIndexOptions>(*psOptionsIn)
: std::make_unique<GDALTileIndexOptions>();
GDALTileIndexTileIterator oGDALTileIndexTileIterator(
psOptions.get(), nSrcCount, papszSrcDSNames);
/* -------------------------------------------------------------------- */
/* Create and validate target SRS if given. */
/* -------------------------------------------------------------------- */
OGRSpatialReference oTargetSRS;
if (!psOptions->osTargetSRS.empty())
{
if (psOptions->bSkipDifferentProjection)
{
CPLError(CE_Warning, CPLE_AppDefined,
"-skip_different_projections does not apply "
"when -t_srs is requested.");
}
oTargetSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
// coverity[tainted_data]
oTargetSRS.SetFromUserInput(psOptions->osTargetSRS.c_str());
}
/* -------------------------------------------------------------------- */
/* Open or create the target datasource */
/* -------------------------------------------------------------------- */
if (psOptions->bOverwrite)
{
CPLPushErrorHandler(CPLQuietErrorHandler);
auto hDriver = GDALIdentifyDriver(pszDest, nullptr);
if (hDriver)
GDALDeleteDataset(hDriver, pszDest);
else
VSIUnlink(pszDest);
CPLPopErrorHandler();
}
auto poTileIndexDS = std::unique_ptr<GDALDataset>(GDALDataset::Open(
pszDest, GDAL_OF_VECTOR | GDAL_OF_UPDATE, nullptr, nullptr, nullptr));
OGRLayer *poLayer = nullptr;
std::string osFormat;
int nMaxFieldSize = 254;
bool bExistingLayer = false;
if (poTileIndexDS != nullptr)
{
auto poDriver = poTileIndexDS->GetDriver();
if (poDriver)
osFormat = poDriver->GetDescription();
if (poTileIndexDS->GetLayerCount() == 1)
{
poLayer = poTileIndexDS->GetLayer(0);
}
else
{
if (psOptions->osIndexLayerName.empty())
{
CPLError(CE_Failure, CPLE_AppDefined,
"-lyr_name must be specified.");
if (pbUsageError)
*pbUsageError = true;
return nullptr;
}
CPLPushErrorHandler(CPLQuietErrorHandler);
poLayer = poTileIndexDS->GetLayerByName(
psOptions->osIndexLayerName.c_str());
CPLPopErrorHandler();
}
}
else
{
if (psOptions->osFormat.empty())
{
std::vector<CPLString> aoDrivers =
GetOutputDriversFor(pszDest, GDAL_OF_VECTOR);
if (aoDrivers.empty())
{
CPLError(CE_Failure, CPLE_AppDefined,
"Cannot guess driver for %s", pszDest);
return nullptr;
}
else
{
if (aoDrivers.size() > 1)
{
CPLError(CE_Warning, CPLE_AppDefined,
"Several drivers matching %s extension. Using %s",
CPLGetExtension(pszDest), aoDrivers[0].c_str());
}
osFormat = aoDrivers[0];
}
}
else
{
osFormat = psOptions->osFormat;
}
if (!EQUAL(osFormat.c_str(), "ESRI Shapefile"))
nMaxFieldSize = 0;
auto poDriver =
GetGDALDriverManager()->GetDriverByName(osFormat.c_str());
if (poDriver == nullptr)
{
CPLError(CE_Warning, CPLE_AppDefined, "%s driver not available.",
osFormat.c_str());
return nullptr;
}
poTileIndexDS.reset(
poDriver->Create(pszDest, 0, 0, 0, GDT_Unknown, nullptr));
if (!poTileIndexDS)
return nullptr;
}
if (poLayer)
{
bExistingLayer = true;
}
else
{
std::string osLayerName;
if (psOptions->osIndexLayerName.empty())
{
VSIStatBuf sStat;
if (EQUAL(osFormat.c_str(), "ESRI Shapefile") ||
VSIStat(pszDest, &sStat) == 0)
{
osLayerName = CPLGetBasename(pszDest);
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"-lyr_name must be specified.");
if (pbUsageError)
*pbUsageError = true;
return nullptr;
}
}
else
{
if (psOptions->bOverwrite)
{
for (int i = 0; i < poTileIndexDS->GetLayerCount(); ++i)
{
auto poExistingLayer = poTileIndexDS->GetLayer(i);
if (poExistingLayer && poExistingLayer->GetName() ==
psOptions->osIndexLayerName)
{
poTileIndexDS->DeleteLayer(i);
break;
}
}
}
osLayerName = psOptions->osIndexLayerName;
}
/* get spatial reference for output file from target SRS (if set) */
/* or from first input file */
OGRSpatialReference oSRS;
if (!oTargetSRS.IsEmpty())
{
oSRS = oTargetSRS;
}
else
{
std::string osFilename = oGDALTileIndexTileIterator.next();
if (osFilename.empty())
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot find any tile");
return nullptr;
}
oGDALTileIndexTileIterator.reset();
auto poSrcDS = std::unique_ptr<GDALDataset>(GDALDataset::Open(
osFilename.c_str(), GDAL_OF_RASTER | GDAL_OF_VERBOSE_ERROR,
nullptr, nullptr, nullptr));
if (!poSrcDS)
return nullptr;
auto poSrcSRS = poSrcDS->GetSpatialRef();
if (poSrcSRS)
oSRS = *poSrcSRS;
}
poLayer = poTileIndexDS->CreateLayer(
osLayerName.c_str(), oSRS.IsEmpty() ? nullptr : &oSRS, wkbPolygon,
psOptions->aosLCO.List());
if (!poLayer)
return nullptr;
OGRFieldDefn oLocationField(psOptions->osLocationField.c_str(),
OFTString);
oLocationField.SetWidth(nMaxFieldSize);
if (poLayer->CreateField(&oLocationField) != OGRERR_NONE)
return nullptr;
if (!psOptions->osSrcSRSFieldName.empty())
{
OGRFieldDefn oSrcSRSField(psOptions->osSrcSRSFieldName.c_str(),
OFTString);
oSrcSRSField.SetWidth(nMaxFieldSize);
if (poLayer->CreateField(&oSrcSRSField) != OGRERR_NONE)
return nullptr;
}
}
auto poLayerDefn = poLayer->GetLayerDefn();
for (const auto &oFetchMD : psOptions->aoFetchMD)
{
if (poLayerDefn->GetFieldIndex(oFetchMD.osFieldName.c_str()) < 0)
{
OGRFieldDefn oField(oFetchMD.osFieldName.c_str(), oFetchMD.eType);
if (poLayer->CreateField(&oField) != OGRERR_NONE)
return nullptr;
}
}
if (!psOptions->osGTIFilename.empty())
{
if (!psOptions->aosMetadata.empty())
{
CPLError(CE_Failure, CPLE_NotSupported,
"-mo is not supported when -gti_filename is used");
return nullptr;
}
CPLXMLNode *psRoot =
CPLCreateXMLNode(nullptr, CXT_Element, "GDALTileIndexDataset");
CPLCreateXMLElementAndValue(psRoot, "IndexDataset", pszDest);
CPLCreateXMLElementAndValue(psRoot, "IndexLayer", poLayer->GetName());
CPLCreateXMLElementAndValue(psRoot, "LocationField",
psOptions->osLocationField.c_str());
if (!std::isnan(psOptions->xres))
{
CPLCreateXMLElementAndValue(psRoot, "ResX",
CPLSPrintf("%.18g", psOptions->xres));
CPLCreateXMLElementAndValue(psRoot, "ResY",
CPLSPrintf("%.18g", psOptions->yres));
}
if (!std::isnan(psOptions->xmin))
{
CPLCreateXMLElementAndValue(psRoot, "MinX",
CPLSPrintf("%.18g", psOptions->xmin));
CPLCreateXMLElementAndValue(psRoot, "MinY",
CPLSPrintf("%.18g", psOptions->ymin));
CPLCreateXMLElementAndValue(psRoot, "MaxX",
CPLSPrintf("%.18g", psOptions->xmax));
CPLCreateXMLElementAndValue(psRoot, "MaxY",
CPLSPrintf("%.18g", psOptions->ymax));
}
int nBandCount = 0;
if (!psOptions->osBandCount.empty())
{
nBandCount = atoi(psOptions->osBandCount.c_str());
}
else
{
if (!psOptions->osDataType.empty())
{
nBandCount = std::max(
nBandCount,
CPLStringList(CSLTokenizeString2(
psOptions->osDataType.c_str(), ", ", 0))
.size());
}
if (!psOptions->osNodata.empty())
{
nBandCount = std::max(
nBandCount,
CPLStringList(CSLTokenizeString2(
psOptions->osNodata.c_str(), ", ", 0))
.size());
}
if (!psOptions->osColorInterp.empty())
{
nBandCount =
std::max(nBandCount,
CPLStringList(
CSLTokenizeString2(
psOptions->osColorInterp.c_str(), ", ", 0))
.size());
}
}
for (int i = 0; i < nBandCount; ++i)
{
auto psBand = CPLCreateXMLNode(psRoot, CXT_Element, "Band");
CPLAddXMLAttributeAndValue(psBand, "band", CPLSPrintf("%d", i + 1));
if (!psOptions->osDataType.empty())
{
const CPLStringList aosTokens(
CSLTokenizeString2(psOptions->osDataType.c_str(), ", ", 0));
if (aosTokens.size() == 1)
CPLAddXMLAttributeAndValue(psBand, "dataType",
aosTokens[0]);
else if (i < aosTokens.size())
CPLAddXMLAttributeAndValue(psBand, "dataType",
aosTokens[i]);
}
if (!psOptions->osNodata.empty())
{
const CPLStringList aosTokens(
CSLTokenizeString2(psOptions->osNodata.c_str(), ", ", 0));
if (aosTokens.size() == 1)
CPLCreateXMLElementAndValue(psBand, "NoDataValue",
aosTokens[0]);
else if (i < aosTokens.size())
CPLCreateXMLElementAndValue(psBand, "NoDataValue",
aosTokens[i]);
}
if (!psOptions->osColorInterp.empty())
{
const CPLStringList aosTokens(CSLTokenizeString2(
psOptions->osColorInterp.c_str(), ", ", 0));
if (aosTokens.size() == 1)
CPLCreateXMLElementAndValue(psBand, "ColorInterp",
aosTokens[0]);
else if (i < aosTokens.size())
CPLCreateXMLElementAndValue(psBand, "ColorInterp",
aosTokens[i]);
}
}
if (psOptions->bMaskBand)
{
CPLCreateXMLElementAndValue(psRoot, "MaskBand", "true");
}
int res =
CPLSerializeXMLTreeToFile(psRoot, psOptions->osGTIFilename.c_str());
CPLDestroyXMLNode(psRoot);
if (!res)
return nullptr;
}
else
{
poLayer->SetMetadataItem("LOCATION_FIELD",
psOptions->osLocationField.c_str());
if (!std::isnan(psOptions->xres))
{
poLayer->SetMetadataItem("RESX",
CPLSPrintf("%.18g", psOptions->xres));
poLayer->SetMetadataItem("RESY",
CPLSPrintf("%.18g", psOptions->yres));
}
if (!std::isnan(psOptions->xmin))
{
poLayer->SetMetadataItem("MINX",
CPLSPrintf("%.18g", psOptions->xmin));
poLayer->SetMetadataItem("MINY",
CPLSPrintf("%.18g", psOptions->ymin));
poLayer->SetMetadataItem("MAXX",
CPLSPrintf("%.18g", psOptions->xmax));
poLayer->SetMetadataItem("MAXY",
CPLSPrintf("%.18g", psOptions->ymax));
}
if (!psOptions->osBandCount.empty())
{
poLayer->SetMetadataItem("BAND_COUNT",
psOptions->osBandCount.c_str());
}
if (!psOptions->osDataType.empty())
{
poLayer->SetMetadataItem("DATA_TYPE",
psOptions->osDataType.c_str());
}
if (!psOptions->osNodata.empty())
{
poLayer->SetMetadataItem("NODATA", psOptions->osNodata.c_str());
}
if (!psOptions->osColorInterp.empty())
{
poLayer->SetMetadataItem("COLOR_INTERPRETATION",
psOptions->osColorInterp.c_str());
}
if (psOptions->bMaskBand)
{
poLayer->SetMetadataItem("MASK_BAND", "YES");
}
for (const auto &osNameValue : psOptions->aosMetadata)
{
char *pszKey = nullptr;
const char *pszValue =
CPLParseNameValue(osNameValue.c_str(), &pszKey);
if (pszKey && pszValue)
poLayer->SetMetadataItem(pszKey, pszValue);
CPLFree(pszKey);
}
}
const int ti_field =
poLayerDefn->GetFieldIndex(psOptions->osLocationField.c_str());
if (ti_field < 0)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Unable to find field `%s' in file `%s'.",
psOptions->osLocationField.c_str(), pszDest);
return nullptr;
}
int i_SrcSRSName = -1;
if (!psOptions->osSrcSRSFieldName.empty())
{
i_SrcSRSName =
poLayerDefn->GetFieldIndex(psOptions->osSrcSRSFieldName.c_str());
if (i_SrcSRSName < 0)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Unable to find field `%s' in file `%s'.",
psOptions->osSrcSRSFieldName.c_str(), pszDest);
return nullptr;
}
}
// Load in memory existing file names in tile index.
std::set<std::string> oSetExistingFiles;
OGRSpatialReference oAlreadyExistingSRS;
if (bExistingLayer)
{
for (auto &&poFeature : poLayer)
{
if (poFeature->IsFieldSetAndNotNull(ti_field))
{
if (oSetExistingFiles.empty())
{
auto poSrcDS =
std::unique_ptr<GDALDataset>(GDALDataset::Open(
poFeature->GetFieldAsString(ti_field),
GDAL_OF_RASTER, nullptr, nullptr, nullptr));
if (poSrcDS)
{
auto poSrcSRS = poSrcDS->GetSpatialRef();
if (poSrcSRS)
oAlreadyExistingSRS = *poSrcSRS;
}
}
oSetExistingFiles.insert(poFeature->GetFieldAsString(ti_field));
}
}
}
std::string osCurrentPath;
if (psOptions->bWriteAbsolutePath)
{
char *pszCurrentPath = CPLGetCurrentDir();
if (pszCurrentPath)
{
osCurrentPath = pszCurrentPath;
}
else
{
CPLError(CE_Warning, CPLE_AppDefined,
"This system does not support the CPLGetCurrentDir call. "
"The option -bWriteAbsolutePath will have no effect.");
}
CPLFree(pszCurrentPath);
}
const bool bIsGTIContext =
!std::isnan(psOptions->xres) || !std::isnan(psOptions->xmin) ||
!psOptions->osBandCount.empty() || !psOptions->osNodata.empty() ||
!psOptions->osColorInterp.empty() || !psOptions->osDataType.empty() ||
psOptions->bMaskBand || !psOptions->aosMetadata.empty() ||
!psOptions->osGTIFilename.empty();
/* -------------------------------------------------------------------- */
/* loop over GDAL files, processing. */
/* -------------------------------------------------------------------- */
while (true)
{
const std::string osSrcFilename = oGDALTileIndexTileIterator.next();
if (osSrcFilename.empty())
break;
std::string osFileNameToWrite;
VSIStatBuf sStatBuf;
// Make sure it is a file before building absolute path name.
if (!osCurrentPath.empty() &&
CPLIsFilenameRelative(osSrcFilename.c_str()) &&
VSIStat(osSrcFilename.c_str(), &sStatBuf) == 0)
{
osFileNameToWrite = CPLProjectRelativeFilename(
osCurrentPath.c_str(), osSrcFilename.c_str());
}
else
{
osFileNameToWrite = osSrcFilename.c_str();
}
// Checks that file is not already in tileindex.
if (oSetExistingFiles.find(osFileNameToWrite) !=
oSetExistingFiles.end())
{
CPLError(CE_Warning, CPLE_AppDefined,
"File %s is already in tileindex. Skipping it.",
osFileNameToWrite.c_str());
continue;
}
auto poSrcDS = std::unique_ptr<GDALDataset>(GDALDataset::Open(
osSrcFilename.c_str(), GDAL_OF_RASTER | GDAL_OF_VERBOSE_ERROR,
nullptr, nullptr, nullptr));
if (poSrcDS == nullptr)
{
CPLError(CE_Warning, CPLE_AppDefined,
"Unable to open %s, skipping.", osSrcFilename.c_str());
continue;
}
double adfGeoTransform[6] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
if (poSrcDS->GetGeoTransform(adfGeoTransform) != CE_None)
{
CPLError(CE_Warning, CPLE_AppDefined,
"It appears no georeferencing is available for\n"
"`%s', skipping.",
osSrcFilename.c_str());
continue;
}
auto poSrcSRS = poSrcDS->GetSpatialRef();
// If not set target srs, test that the current file uses same
// projection as others.
if (oTargetSRS.IsEmpty())
{
if (!oAlreadyExistingSRS.IsEmpty())
{
if (poSrcSRS == nullptr ||
!poSrcSRS->IsSame(&oAlreadyExistingSRS))
{
CPLError(
CE_Warning, CPLE_AppDefined,
"%s is not using the same projection system "
"as other files in the tileindex.\n"
"This may cause problems when using it in MapServer "
"for example.\n"
"Use -t_srs option to set target projection system. %s",
osSrcFilename.c_str(),
psOptions->bSkipDifferentProjection
? "Skipping this file."
: "");
if (psOptions->bSkipDifferentProjection)
{
continue;
}
}
}
else
{
if (poSrcSRS)
oAlreadyExistingSRS = *poSrcSRS;
}
}
const int nXSize = poSrcDS->GetRasterXSize();
const int nYSize = poSrcDS->GetRasterYSize();
if (nXSize == 0 || nYSize == 0)
{
CPLError(CE_Warning, CPLE_AppDefined,
"%s has 0 width or height. Skipping",
osSrcFilename.c_str());
continue;
}
double adfX[5] = {0.0, 0.0, 0.0, 0.0, 0.0};
double adfY[5] = {0.0, 0.0, 0.0, 0.0, 0.0};
adfX[0] = adfGeoTransform[0] + 0 * adfGeoTransform[1] +
0 * adfGeoTransform[2];
adfY[0] = adfGeoTransform[3] + 0 * adfGeoTransform[4] +
0 * adfGeoTransform[5];
adfX[1] = adfGeoTransform[0] + nXSize * adfGeoTransform[1] +
0 * adfGeoTransform[2];
adfY[1] = adfGeoTransform[3] + nXSize * adfGeoTransform[4] +
0 * adfGeoTransform[5];
adfX[2] = adfGeoTransform[0] + nXSize * adfGeoTransform[1] +
nYSize * adfGeoTransform[2];
adfY[2] = adfGeoTransform[3] + nXSize * adfGeoTransform[4] +
nYSize * adfGeoTransform[5];
adfX[3] = adfGeoTransform[0] + 0 * adfGeoTransform[1] +
nYSize * adfGeoTransform[2];
adfY[3] = adfGeoTransform[3] + 0 * adfGeoTransform[4] +
nYSize * adfGeoTransform[5];
adfX[4] = adfGeoTransform[0] + 0 * adfGeoTransform[1] +
0 * adfGeoTransform[2];
adfY[4] = adfGeoTransform[3] + 0 * adfGeoTransform[4] +
0 * adfGeoTransform[5];
// If set target srs, do the forward transformation of all points.
if (!oTargetSRS.IsEmpty() && poSrcSRS)
{
if (!poSrcSRS->IsSame(&oTargetSRS))
{
auto poCT = std::unique_ptr<OGRCoordinateTransformation>(
OGRCreateCoordinateTransformation(poSrcSRS, &oTargetSRS));
if (!poCT || !poCT->Transform(5, adfX, adfY, nullptr))
{
CPLError(CE_Warning, CPLE_AppDefined,
"unable to transform points from source "
"SRS `%s' to target SRS `%s' for file `%s' - file "
"skipped",
poSrcDS->GetProjectionRef(),
psOptions->osTargetSRS.c_str(),
osFileNameToWrite.c_str());
continue;
}
}
}
else if (bIsGTIContext && !oAlreadyExistingSRS.IsEmpty() &&
(poSrcSRS == nullptr ||
!poSrcSRS->IsSame(&oAlreadyExistingSRS)))
{
CPLError(
CE_Failure, CPLE_AppDefined,
"%s is not using the same projection system "
"as other files in the tileindex. This is not compatible of "
"GTI use. Use -t_srs option to reproject tile extents "
"to a common SRS.",
osSrcFilename.c_str());
return nullptr;
}
const double dfMinX =
std::min(std::min(adfX[0], adfX[1]), std::min(adfX[2], adfX[3]));
const double dfMinY =
std::min(std::min(adfY[0], adfY[1]), std::min(adfY[2], adfY[3]));
const double dfMaxX =
std::max(std::max(adfX[0], adfX[1]), std::max(adfX[2], adfX[3]));
const double dfMaxY =
std::max(std::max(adfY[0], adfY[1]), std::max(adfY[2], adfY[3]));
const double dfRes =
(dfMaxX - dfMinX) * (dfMaxY - dfMinY) / nXSize / nYSize;
if (!std::isnan(psOptions->dfMinPixelSize) &&
dfRes < psOptions->dfMinPixelSize)
{
CPLError(CE_Warning, CPLE_AppDefined,
"%s has %f as pixel size (< %f). Skipping",
osSrcFilename.c_str(), dfRes, psOptions->dfMinPixelSize);
continue;
}
if (!std::isnan(psOptions->dfMaxPixelSize) &&
dfRes > psOptions->dfMaxPixelSize)
{
CPLError(CE_Warning, CPLE_AppDefined,
"%s has %f as pixel size (> %f). Skipping",
osSrcFilename.c_str(), dfRes, psOptions->dfMaxPixelSize);
continue;
}
auto poFeature = std::make_unique<OGRFeature>(poLayerDefn);
poFeature->SetField(ti_field, osFileNameToWrite.c_str());
if (i_SrcSRSName >= 0 && poSrcSRS)
{
const char *pszAuthorityCode = poSrcSRS->GetAuthorityCode(nullptr);
const char *pszAuthorityName = poSrcSRS->GetAuthorityName(nullptr);
if (psOptions->eSrcSRSFormat == FORMAT_AUTO)
{
if (pszAuthorityName != nullptr && pszAuthorityCode != nullptr)
{
poFeature->SetField(i_SrcSRSName,
CPLSPrintf("%s:%s", pszAuthorityName,
pszAuthorityCode));
}
else if (nMaxFieldSize == 0 ||
strlen(poSrcDS->GetProjectionRef()) <=
static_cast<size_t>(nMaxFieldSize))
{
poFeature->SetField(i_SrcSRSName,
poSrcDS->GetProjectionRef());
}
else
{
char *pszProj4 = nullptr;